This is a lesson that couples Grace and Carlo (Julia Stiles, Taye Diggs), and Sharyl and George (Melissa George, David Harbour) learn the hard way.
Taking place over two evenings set several years apart, the couples’ friendship becomes undone during two nights of frank conversation about sex, money and religion.

Confrontation erupts as they realize their lives have moved in irrevocably different directions. As each couple’s fractured relationship is revealed in front of the other, the collateral damage is an old friendship.